Clamp



FIG. 1 is a top and right side perspective view of a clamp showing ournew design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right end elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a clamp, as shown and described.